docs: def getWindowRect(self, hwnd):
          """ Returns a rect (x,y,w,h) for the specified window's area """
          for w in self._get_window_list():
              if "kCGWindowNumber" in w and w["kCGWindowNumber"] == hwnd:
                  x = w["kCGWindowBounds"]["X"]
                  y = w["kCGWindowBounds"]["Y"]
                  width = w["kCGWindowBounds"]["Width"]
                  height = w["kCGWindowBounds"]["Height"]
                  return (x, y, width, height)
          raise OSError("Unrecognized window number {}".format(hwnd))